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SUBSEQUENT EVENTS (Details) - $ / shares	May 01, 2018	Mar. 31, 2018	Dec. 31, 2017
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Subsequent Event
Common stock dividend declared, percentage of shares outstanding	5.00%
Common stock, par value (in dollars per share)	$ 0.01

X

- Definition

The percentage of common stock declared in a stock dividend, as a percentage of outstanding shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	dwsn_
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X

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- Details

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